Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee3268b4c7f0e679…

MALICIOUS

PDF

41.0 KB Created: 2020-07-18 01:00:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c098c30cc39b9213d320d0f3c82ae75a SHA-1: c7146d758bb8b7a8cc417445702f6ce050ca55db SHA-256: ee3268b4c7f0e679bdf87fe5f0d2f8d2c3de53082601efe600b472ad06e2b37e
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.ru. Additionally, it exhibits a PDF link farm heuristic, indicating an attempt to obscure malicious URLs by linking to numerous other PDFs, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains text related to 'driving licence theory test book pdf', suggesting a lure to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=driving+licence+theory+test+book+pdf
    • http://files.graylingcountryclub.com/uploads/1/3/1/4/131453453/679362.pdf
    • http://files.cancersurvivalwhatsnext.com/uploads/1/3/1/4/131482953/lenit.pdf
    • http://files.cc-hydro.com/uploads/1/3/2/3/132302993/jekomo_zodoxadijetejes_zikowewi.pdf
    • http://files.simpleandsubversive.com/uploads/1/3/0/7/130776401/5160228.pdf
    • https://cdn.shopify.com/s/files/1/0431/5978/1538/files/60039621733.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/26965864763.pdf
    • https://cdn.shopify.com/s/files/1/0434/8638/0197/files/78572196000.pdf
    • https://wuwelenimat.files.wordpress.com/2020/07/86284389092.pdf
    • https://kuziboki.files.wordpress.com/2020/07/55356939167.pdf
    • https://vumarebef.files.wordpress.com/2020/06/zixiropomoza.pdf
    • https://cdn.shopify.com/s/files/1/0431/2776/7206/files/64385206105.pdf
    • https://cdn.shopify.com/s/files/1/0435/4460/8920/files/88185602582.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71409998288.pdf
    • https://cdn.shopify.com/s/files/1/0427/6515/6508/files/79755077804.pdf
    • https://cdn.shopify.com/s/files/1/0433/0350/1989/files/nexusamilizuvugovisibifaw.pdf
    • https://cdn.shopify.com/s/files/1/0434/8212/0357/files/wedobapijexirafamumulap.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vebamuwonodivori.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062cf.bin
3e63212bdf9701012e5f6acc765f9787685f0390161e752b7f3c081c51361005		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62CF 5360 bytes
font_01_sfnt_off00007505.bin
23ba98959a8aa5ed631197d14e1f12c5d14936a7dcb3e8c33506cb2733c7c041		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7505 9760 bytes

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